Samuel p



(ModeL) PADLOG'K.

51 14) e vvto z i? J12;

NO; 440,069. Patented Nov. 4, 1890.

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wdweosao M Guam UNITED STATES PATENT OFFICE.

SAMUEL P. STEIN, OF MILTON, PENNSYLVANIA, ASSIGNOR TO THOMAS E. GOULD,FREDERICK M. KELLY, AND JOHN G. KURTZ, ALL OF SAME PLACE.

PAD Loo K.

SPECIFICATION forming part of Letters Patent No. 440,069, dated November4, 1890.

Application filed July 25, 1890. Serial No. 359,873. (ModeL) To all whomit may concern.-

Be it known thatI, SAMUEL P. STEIN, a citizen of the United States ofAmerica, residing at Milton, in the county of Northumberland and Stateof Pennsylvania, have invented a new and useful Padlock, of which thefollowing is a specification.

My invention has relation to improvements in padlocks, and the object isto provide a padlock of simple construction and of great securityagainst unauthorized attempts to unlock the same.

My invention consists in the novel construction of parts and theircombination, as will be hereinafter fully described, and as will bespecifically pointed out in the claims, as re quired by the statute.

I have fully and clearly illustrated my invention in the accompanyingdrawings, wherein- Figure 1 is an elevation of the padlock with one ofthe plates removed, showing the mechanism in locked relation. Fig. 2 isa similar View showing the parts in unlocked relation. Fig. 3 is a Viewshowing the position of the parts when animperforated key is inserted.Fig. 4 are details of thetumblers. Fig. 5 is a view of the key.

A designates the casing, consisting of faceplates 1--one only of whichis shownconnected by a rim-piece 2, in which are formed the usualopenings 3 4 to take the hinge end and nose of the shackle 5, and havinga keyhole 6. In the casing is pivoted the shackle 5, having at its hingeend a lug or' seat 7,

against which or in which the free end of a spring 8 rests and serves tothrow the shackle upward out of the casing when the nose end is releasedfrom the catch in the tumblers. The spring 8 has its other end securedto the rim-piece, substantially as shown in the drawings at 9. The noseend of the shackle is of arrow-head shape to afford catches for thelocking-lugs 011 the tumblers, the one for the locking-lugs of thetumblers and the other to be engaged by the inner lugs of the tumblersshould an attempt be made to lift the tumblers by other means than theproper key. Vertically projected from the rim-piece, with its key-faceon alignment with the edge of the key-hole and extending a distance intothe casing, is a key guard or guide 10, which serves as a guard to theentrance of the key and also to prevent the projecting points on theheels of the tumblers from passing too far through the apertures in thekey. On the inner face of the rim-piece, at the opposite edgeof thekey-hole, maybe a short piece 11, which serves as a guide to the key inconjunction with the more extended guide or guard 10. In the casing isfixed a stud 12, on which the tumblers are pivoted and mounted, andanother stud 13 is fixed in the casing against which the inner edges ofthe tumblers lodge and rest when in locked position, substantially asshown in Fig. 1 of the drawings.

B designates the tumblers. These are of the form shown in Fig. 4:,consisting of metal plates having a bearing-hole to receive the bearingor pivot 12 in the casing. Each tumbler has a spring 14 fixed thereto,the free end of the springs resting against the inner face of therim-piece and operating to always throw the tumblers into engagementwith the nose of the shackle, as shown in Fig. 1 of the drawings. Thecatch of the tumblers consists of a recess 1 5, havingoppositely-inwardly-extending lugs 16, which engage the nose of theshackle in the locked position or when the tumblers are pushed in theopposite direction by the entrance of an unfitted key or plate. At therear of each tumbler is a shoulder 17, against which the end of the keyengages when pushed in the lock and results in lift ing the tumblercatch out of engagement with the nose of the shackle. These shouldersare of different depths or heights in the respective tumblers in orderthat they may be pushed to alignment or in operative arrangement by thedifierent steps on the end of the key. At the heel of each tumbler is aprojection 18, preferably made round to en gage in similarly-shapedholes or perforations in the key, as hereinafter more specificallyspecified. These tumblers mayin number be two or more. I have shown themfive in number in the lock illustrated. O designates the key, made of afiat plate with the end provided with a number of steps 19, graduated orarranged to suit the varying positions of the shoulders 011 therespective tumblers. In t blers to their unlocked position. It will beobserved that if a key is inserted in the lock which has no holes, orwhich has holes which I do not register with the line of movement of theheel-projections of the tumblers, that the tumblers cannot be moved farenough to unlock them from their engagement with the nose of theshackle. Itwill also be observed that the arrangement of these pin holesor is tampered with by wires or pins or any of the skeleton utensils ofdishonesty it will be impossible todirect the means employed with anycertainty to any one of the tumblers. If it is attempted to push thetumblers in-to disengagement with the shackle by lifting them with anymeans usuallyemployed for that purpose, the attempt will result inmoving them beyond the center of movement and. into engagement with theinner or reverse'side of the catch of the shackle, and thus the attempt.to

' obtain unauthorized entrance be foiled and prevented, becausethe lockwill thenbe secured by the interlocking of the shackle with theinner lugor catch of the tumblers.v

end of the shackle.

Having thus described my invention as required by the statute, I proceedto particularly point out and distinctly claim the parts, combinations,and elements which I claim as novel and desire to secure by LettersPatent, as follows:

l. The combination, with the casing and the shackle, of the pivotedtumblers B, formed with a catch to engage the nose of the shackle andhaving projecting heel portions to engage in apertures in the key,substantially as described.

2. The combination, with the casing and shackle of the tumblers 13,formed with oppositelyarranged catches to engage the nose of the shackleand having projecting heel portions to enter the'apertures in the keyand shoulders to engage the endof the key, substantially as and for thepurpose specified. apertures in the key is such that if the: lock v 3.The combination, with the casing provided with a. key-hole having avertically-arranged key guide or guard extending into the I casing, andthe shackle formed with a spearshaped nose end, of the tumblers formedwith a recess having oppositely-arranged lugs to 5 engage the nose ofthe shackle, shoulders to I engage the steps in the end of the key, andheel portions to enter the apertures in the key,

and the key having steps on its end to engage the shoulders on thetumblers,and apertures to receive the heel portions of the tumblers,

substantially as'and fc rthe purpose specified.

In witness whereof I have hereunto set my hand in the presence of twoattestingwitnesses.

SAMUEL P. STEIN.

Attest:

WM. H. HAOKENBIG, JOHN BECKLEY.

